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Create app autofill service: a dialog pops up for all password fields & has a button to paste/set a password found in the store with name matching app's

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This commit is contained in:
Matthew Wong
2015-07-28 03:11:02 -04:00
parent eced1dd314
commit 02bfcf6c3f
6 changed files with 271 additions and 0 deletions
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16
app/src/main/AndroidManifest.xml
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@@ -4,6 +4,9 @@
<uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.BIND_ACCESSIBILITY_SERVICE" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<application android:allowBackup="true" android:icon="@drawable/ic_launcher" <application android:allowBackup="true" android:icon="@drawable/ic_launcher"
android:label="@string/app_name" android:theme="@style/AppTheme"> android:label="@string/app_name" android:theme="@style/AppTheme">
<activity android:name=".PasswordStore" android:label="@string/app_name" <activity android:name=".PasswordStore" android:label="@string/app_name"
@@ -42,6 +45,19 @@
android:value="com.zeapo.pwdstore.PasswordStore" /> android:value="com.zeapo.pwdstore.PasswordStore" />
</activity> </activity>
<service android:name=".AutofillService"
android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
<intent-filter>
<action android:name="android.accessibilityservice.AccessibilityService" />
</intent-filter>
<meta-data android:name="android.accessibilityservice"
android:resource="@xml/autofill_config" />
</service>
<activity android:name=".AutofillActivity">
</activity>
<activity android:name="net.rdrei.android.dirchooser.DirectoryChooserActivity" /> <activity android:name="net.rdrei.android.dirchooser.DirectoryChooserActivity" />
</application> </application>

33
app/src/main/java/com/zeapo/pwdstore/AutofillActivity.java Normal file
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@@ -0,0 +1,33 @@
package com.zeapo.pwdstore;
import android.app.PendingIntent;
import android.content.Intent;
import android.content.IntentSender;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
public class AutofillActivity extends AppCompatActivity {
public static final int REQUEST_CODE_DECRYPT_AND_VERIFY = 9913;
private boolean bound = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = getIntent();
PendingIntent pi = intent.getExtras().getParcelable("pending_intent");
try {
startIntentSenderForResult(pi.getIntentSender()
, REQUEST_CODE_DECRYPT_AND_VERIFY, null, 0, 0, 0);
} catch (IntentSender.SendIntentException e) {
Log.e(AutofillService.Constants.TAG, "SendIntentException", e);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
finish();
AutofillService.getService().decryptAndVerify();
}
}

200
app/src/main/java/com/zeapo/pwdstore/AutofillService.java Normal file
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@@ -0,0 +1,200 @@
package com.zeapo.pwdstore;
import android.accessibilityservice.AccessibilityService;
import android.app.PendingIntent;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;
import android.widget.Button;
import android.widget.Toast;
import com.zeapo.pwdstore.utils.PasswordItem;
import com.zeapo.pwdstore.utils.PasswordRepository;
import org.apache.commons.io.FileUtils;
import org.openintents.openpgp.OpenPgpError;
import org.openintents.openpgp.util.OpenPgpApi;
import org.openintents.openpgp.util.OpenPgpServiceConnection;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
public class AutofillService extends AccessibilityService {
private OpenPgpServiceConnection serviceConnection;
private SharedPreferences settings;
private AccessibilityNodeInfo info; // the original source of the event (the edittext field)
private ArrayList<PasswordItem> items;
private static AutofillService service;
public final class Constants {
public static final String TAG = "Keychain";
}
@Override
protected void onServiceConnected() {
super.onServiceConnected();
serviceConnection = new OpenPgpServiceConnection(AutofillService.this, "org.sufficientlysecure.keychain");
serviceConnection.bindToService();
settings = PreferenceManager.getDefaultSharedPreferences(this);
service = this;
}
public static AutofillService getService() {
return service;
}
@Override
public void onAccessibilityEvent(AccessibilityEvent event) {
if (!event.isPassword() || Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR2) {
return;
}
info = event.getSource();
PackageManager packageManager = getPackageManager();
ApplicationInfo applicationInfo;
try {
applicationInfo = packageManager.getApplicationInfo(event.getPackageName().toString(), 0);
} catch (PackageManager.NameNotFoundException e) {
applicationInfo = null;
}
String appName = (applicationInfo != null ? packageManager.getApplicationLabel(applicationInfo) : "").toString();
if (appName.equals("OpenKeychain")) {
return;
}
items = recursiveFilter(appName, null);
if (items.isEmpty()) {
return;
}
ArrayList<CharSequence> itemNames = new ArrayList<>();
for (PasswordItem item : items) {
itemNames.add(item.toString());
}
AlertDialog.Builder builder = new AlertDialog.Builder(this, R.style.Theme_AppCompat_Light_Dialog_Alert);
builder.setNegativeButton("Cancel", null);
builder.setView(R.layout.autofill_layout);
final AlertDialog dialog = builder.create();
dialog.setTitle("Fill with Password Store");
dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
dialog.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
dialog.show();
((Button) dialog.findViewById(R.id.button)).setText(itemNames.get(0).toString());
dialog.findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
decryptAndVerify();
dialog.dismiss();
}
});
}
private ArrayList<PasswordItem> recursiveFilter(String filter, File dir) {
ArrayList<PasswordItem> items = new ArrayList<>();
if (!PasswordRepository.isInitialized()) {
return items;
}
ArrayList<PasswordItem> passwordItems = dir == null ?
PasswordRepository.getPasswords() :
PasswordRepository.getPasswords(dir);
for (PasswordItem item : passwordItems) {
if (item.getType() == PasswordItem.TYPE_CATEGORY) {
recursiveFilter(filter, item.getFile());
}
if (item.toString().toLowerCase().contains(filter.toLowerCase())) {
items.add(item);
}
}
return items;
}
@Override
public void onInterrupt() {
}
public void decryptAndVerify() {
Intent data = new Intent();
data.setAction(OpenPgpApi.ACTION_DECRYPT_VERIFY);
InputStream is = null;
try {
is = FileUtils.openInputStream(items.get(0).getFile());
} catch (IOException e) {
e.printStackTrace();
}
ByteArrayOutputStream os = new ByteArrayOutputStream();
OpenPgpApi api = new OpenPgpApi(AutofillService.this, serviceConnection.getService());
Intent result = api.executeApi(data, is, os);
switch (result.getIntExtra(OpenPgpApi.RESULT_CODE, OpenPgpApi.RESULT_CODE_ERROR)) {
case OpenPgpApi.RESULT_CODE_SUCCESS: {
try {
String[] passContent = os.toString("UTF-8").split("\n");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
// if the user focused on something else, take focus back
// but this will open another dialog...
info.performAction(AccessibilityNodeInfo.ACTION_FOCUS);
Bundle args = new Bundle();
args.putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE,
passContent[0]);
info.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, args);
} else {
info.performAction(AccessibilityNodeInfo.ACTION_FOCUS);
ClipboardManager clipboard = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
ClipData clip = ClipData.newPlainText("autofill_pm", passContent[0]);
clipboard.setPrimaryClip(clip);
info.performAction(AccessibilityNodeInfo.ACTION_PASTE);
clip = ClipData.newPlainText("autofill_pm", "MyPasswordIsDaBest!");
clipboard.setPrimaryClip(clip);
if (settings.getBoolean("clear_clipboard_20x", false)) {
for (int i = 0; i < 19; i++) {
clip = ClipData.newPlainText(String.valueOf(i), String.valueOf(i));
clipboard.setPrimaryClip(clip);
}
}
}
} catch (UnsupportedEncodingException e) {
Log.e(Constants.TAG, "UnsupportedEncodingException", e);
}
break;
}
case OpenPgpApi.RESULT_CODE_USER_INTERACTION_REQUIRED: {
Log.i("PgpHandler", "RESULT_CODE_USER_INTERACTION_REQUIRED");
PendingIntent pi = result.getParcelableExtra(OpenPgpApi.RESULT_INTENT);
// need to start a blank activity to call startIntentSenderForResult
Intent intent = new Intent(AutofillService.this, AutofillActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK
| Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
intent.putExtra("pending_intent", pi);
startActivity(intent);
break;
}
case OpenPgpApi.RESULT_CODE_ERROR: {
OpenPgpError error = result.getParcelableExtra(OpenPgpApi.RESULT_ERROR);
Toast.makeText(AutofillService.this,
"Error from OpenKeyChain : " + error.getMessage(),
Toast.LENGTH_LONG).show();
Log.e(Constants.TAG, "onError getErrorId:" + error.getErrorId());
Log.e(Constants.TAG, "onError getMessage:" + error.getMessage());
break;
}
}
}
}

12
app/src/main/res/layout/autofill_layout.xml Normal file
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@@ -0,0 +1,12 @@
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button"
android:layout_gravity="center"/>
</LinearLayout>

2
app/src/main/res/values/strings.xml
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@@ -154,4 +154,6 @@
<string name="pwd_generate_button">Generate</string> <string name="pwd_generate_button">Generate</string>
<string name="category_string">"Category: "</string> <string name="category_string">"Category: "</string>
<!-- Autofill -->
<string name="autofill_description">Auto-fills login fields.</string>
</resources> </resources>

8
app/src/main/res/xml/autofill_config.xml Normal file
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@@ -0,0 +1,8 @@
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
android:description="@string/autofill_description"
android:accessibilityEventTypes="typeViewFocused"
android:accessibilityFlags="flagDefault"
android:accessibilityFeedbackType="feedbackGeneric"
android:notificationTimeout="100"
android:canRetrieveWindowContent="true"
/>